Atomic and Nuclear Physics Answers

Find the average velocity of the equation
x=t²+2t+3 when t=0, t=5

What velocity would a 60 kg person need to move at in order to have the same momentum as a 600 nm photon? (to 2 s.f and in m s−1)

the discovery of the higgs particle was an important contribution to our understanding to particle physics. describe the standard model of subatomic particle.you should identify the fundamental particles and the composition of the particles we can observe

The neutrino and antineutrino difference in the property

a piece of wood from an ancient boat was found to show c14 activity of 5 counts per minute an equal amount of wood of recent date give a count rate of 20 counts per minute the half life of c14 is 5568 years the age of the boat

E and K represent the energy and wave vector of an electron respectively then the effective number of electrons in a band is proportional to
1)E
2)(dE/dK)
3)(d²E/dK²)
4)(dE/dK)²

The number of nucleons a state with contact number j is
1)(2J+1)
2)2(2J+1)
3)(2j+1)
4)2(2j+1)

the stopping potential of a photoelestric chamber is 3v the work function is 2.2ev calculate the incident photon energy and frequency

An electron capture reaction
1)a neutrino is created
2)antineutrino is created
3)beta + is emitted
4)beta- is emitted

a beta particle of energy 1MeV enters a thin window detector tube filled with methane and organ and initiates an avalanche of 5×10^10 Ion pairs the average energy lose per ion pair creation is 50 eV. the multiplication factor is